American Mineralogist, Volume 83, pages 400±403, 1998 NEW MINERAL NAMES* JOHN L. JAMBOR1 AND ANDREW C. ROBERTS2 1Department of Earth Sciences, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada 2Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0G1, Canada Benyacarite* from the results of a crystal structure determination. The F. Demartin, T. Pilati, H.D. Gay, C.M. Gramaccioli (1993) empirical formula on the basis of 23 anions is The crystal structure of a mineral related to paulkerrite. (Ca3.00K0.01)S3.01B5O6(OH)7Cl1.99´8H2O. The mineral occurs Zeits. Kristallogr., 208, 57±71. as micaceous grains, 0.5 3 0.25 3 0.1 mm, that form F. Demartin, H.D. Gay, C.M. Gramaccioli, T. Pilati (1997) cleavable masses up to 2 3 1 3 1 mm. Colorless to white, Benyacarite, a new titanium-bearing phosphate mineral transparent to translucent, vitreous luster, white streak, species from Cerro Blanco, Argentina. Can. Mineral., ¯exible, micaceous, perfect {010} cleavage, H 5 5, 35, 707±712. twinned on (010), non¯uorescent, Dmeas 5 1.97(3), Dcalc 5 Chemical data in the 1993 paper were abstracted in 1.93 g/cm3 for Z 5 2. The IR spectrum shows the pres- Am. Mineral., 79, p. 763, 1994. On the basis of Z 5 4, ence of H2O groups and complex borate groups. Optically 21 the empirical formula is [(H2O)0.78K0.16Na0.03]2 Ti(Mn V0.75 biaxial negative, a51.506(2), b51.527(2), g5 21 31 41 Fe0.21 Mg0.04)2(Fe 0.68 Ti 0.28 Al0.07)2(PO4)4(O0.6F0.4)2´14H2O, The 1.532(2), 2Vmeas 5 56(1), 2Vcalc 5 51.48, orientation Z 5 mineral occurs as euhedral tabular to almost equidimen- b, X ` c 5 308 in the obtuse angle b. Single-crystal X-ray sional crystals, up to 0.3 mm across, showing {010}, structure study (R 5 0.039) indicated monoclinic symmetry, {111}, {001}, and less common {100}. Greenish yellow pseudohexagonal, space group Pa, a 5 17.42(4), b 5 color, vitreous luster, transparent to translucent, white 8.077(5), c 5 8.665(6) AÊ . The powder pattern (114 mm streak, brittle, H 5 2½±3, uneven fracture, perfect {010} Debye±Scherrer, CuKa radiation) has strongest lines at 3 cleavage, non¯uorescent, Dcalc 5 2.37 g/cm for Z 5 4. 8.10(100,010), 4.04(40,020), 2.535(20,230,031), and 2.276 Pale yellow in transmitted light, nonpleochroic, biaxial (20,231). positive, a51.612(3), b51.621(3), g51.649(3), 2Vmeas The mineral is associated with other borates in Missis- 5 60(3)8, orientation X 5 b, Y 5 c, Z 5 a. Single-crystal sippian halite-sylvite evaporites intersected by drilling at X-ray structure study (R 5 0.034) indicated orthorhombic the Potash Corporation of Saskatchewan mine at Penob- symmetry, space group Pbca, a 5 10.55(1), b 5 20.49(4), squis, Kings County, New Brunswick. The new name is c 5 12.52(1) AÊ as re®ned from a 114 mm Gandol® pow- for Brian Roulston (b. 1948), geologist and evaporites der pattern (CuKa radiation) with strongest lines of specialist. Type material is in the Canadian Museum of 10.29(90,020), 7.51(80,111), 6.26(100,002), 3.76(50,222), Nature, Ottawa, Canada. J.L.J. and 3.13(100,004). The mineral occurs in a phosphate-bearing granitic pegmatite at Cerro Blanco, near Tanti, CoÂrdoba, Argen- Hechtsbergite* tina. The new name is for Maria Angelica R. de Benyacar (b. 1928). Type material is in the Mineralogical Museum W. Krause, H.-J. Bernhardt, G. Blass, H. Effenberger, H.- W. Graf (1997) Hechtsbergite, Bi O(OH)(VO ), a new of the Department of Earth Sciences, University of Mil- 2 4 mineral from the Black Forest, Germany. Neues Jahrb. ano, Italy. Beyacarite is isomorphous with paulkerrite and Mineral. Mon., 271±287. mantienneite. J.L.J. Electron microprobe analysis gave Bi2O3 83.02, V2O5 15.18, As2O5 0.52, [H2O]calc 1.59, sum 100.31 wt%, cor- Brianroulstonite* responding to Bi2.03O1.08(VO4)0.95(AsO4)0.03. Occurs as eu- J.D. Grice, R.A. Gault, J. Van Velthuizen (1997) Brian- hedral brown crystals and aggregates to 0.2 mm, showing roulstonite: A new borate mineral with a sheet struc- mainly {111}, with subordinate {112}, {113}, {101}, ture. Can. Mineral., 35, 751±758. {102}, and {302}. Transparent to translucent, adamantine Four electron microprobe analyses gave CaO 32.85 luster, yellow streak, conchoidal fracture, H 5 4½, non- 3 ¯uorescent, soluble in dilute HCl, Dcalc 5 6.87 g/cm for (29.24±34.50), K2O 0.05 (0.05±0.06), Cl 13.79 (13.28± Z 5 4. Optically biaxial positive, a52.26(2), bcalc 5 14.31), B2O3 33.92, H2O 40.44, O [ Cl 3.11, sum 117.99 2.27, g52.30(2), 2V 5 50(5)8, X\b, Z ` c 5 358 in the wt%, with H2O and B2O3 calculated by stoichiometry obtuse angle b. Single-crystal X-ray study indicated * Before publication, minerals marked with an asterisk were monoclinic symmetry, space group P21/c, a 5 6.791(1), approved by the Commission on New Minerals and Mineral b 5 7.535(1), c 5 10.881(1) AÊ , b5107.00(1)8. Strongest Names, International Mineralogical Association. lines of the powder pattern (diffractometer, CoKa1 radiation) 0003±004X/98/0304±0400$05.00 400 JAMBOR AND ROBERTS: NEW MINERAL NAMES 401 are 4.279(41,012), 3.267(100,120,202,121,112), 3.150 groups, and showing {100}, {001}, {010}, and minor (63,013), 2.734(35,211), and 2.036(29,133,231,213,033). {110}, {011}, and {101}. Pale beige to colorless, vitreous The mineral is associated with chrysocolla, bismutite, luster, translucent to transparent, brittle, H 5 4, white beyerite, namibite, mixite, and eulytite in minute cavities streak, uneven fracture, good {100} and {010} cleavages, 3 in gneiss that is mined as road-building material at the non¯uorescent, Dmeas 5.3.3, Dcalc 5 3.61 g/cm for Z 5 Hechtsberg quarry at Hausach, Black Forest, Germany. 4. Optically biaxial negative, a51.457(1), b51.543(1), The mineral is the V analog of atelestite. Type material g51.622(1), 2Vmeas 5 82(1), 2Vcalc 5 838, orientation Y is in the Institute fuÈr Mineralogie, Ruhr-UniversitaÈt Bo- 5 a, X 5 b, Z 5 c, weakly pleochroic, Y 5 Z 5 pale chum, Germany. J.L.J. brown, X 5 colorless. Single-crystal X-ray structure study (R 5 0.016) indicated orthorhombic symmetry, space group Pmcn; a 5 6.964(3), b 5 9.173(6), c 5 HiaÈrneite* 6.302(2) AÊ as re®ned from the powder pattern (114 mm D. Holtstam (1997) HiaÈrneite, a new Zr-Sb oxide mineral Gandol®, CuKa radiation). Strongest lines are 5.19(90,011), isostructural with calzirtite, from LaÊngban, Sweden. 3.477(100,200), 2.800(50,130), 2.087(50,132,222), Eur. J. Mineral., 9, 843±848. 2.057(50,141,013), 1.966(50,321), 1.849(50,330), and One of eight listed electron microprobe analyses gave 1.763(50,213,051). Na2O 0.59, MgO 0.09, CaO 9.15, MnO 4.01, Mn2O3 3.71 The mineral occurs in a late-stage pegmatitic dyke in (Mn21/Mn31 partitioned on the basis on nine cations and nepheline syenite at the Poudrette quarry, Mont Saint- 16 O), TiO2 4.66, ZrO2 53.94, Sb2O5 22.87, Fe2O3 0.81, Hilaire, Rouville County, Quebec. The new name is for HfO2 0.5, sum 100.33 wt%, corresponding to (Na0.18 Elsa (b. 1947) and LaÂzlo HorvaÂth (b. 1937), both of 21 31 51 41 31 Mg0.02Ca1.57Mn0.54 )S2.31(Zr4.20Mn 0.45 )S4.65(Sb 1.36 Ti 0.56 Fe 0.10 )S2.02 whom have been extensively involved in Mont Saint-Hi- 31 O16, simpli®ed as (Ca,Mn,Na)2(Zr,Mn )5(Sb,Ti,Fe)2O16. laire mineralogy. Type material is in the Canadian Mu- The mineral occurs as subhedral, short prismatic grains seum of Nature, Ottawa, Canada. J.L.J. up to 200 mm in longest dimension and in aggregates up to 500 mm across. Bright red color, translucent, no cleav- age, H 5 7, non¯uorescent, insoluble in cold mineral ac- 3 Iltisite* ids, Dcalc 5 5.44 g/cm for Z 5 8; typically occurs as poikiloblastic grains containing abundant mica inclusions. H. Sarp, J. Sanz-Gysler, P. Perroud (1997) Iltisite, Hg- Optically uniaxial positive, weakly dichroic in orange and SAg(Cl,Br), a new mineral from the Cap Garonne yellow-orange in transmitted light; colorless to gray in mine, Var (France), a polymorph of capgaronnite. re¯ected light, weakly anisotropic, yellow internal re¯ec- Archs Sci. GeneÁve, 50, 1±5 (in French, English abs.). tion, v 5 2.12(2), e59 2.16(2). Single-crystal X-ray calc calc Electron microprobe analysis gave Hg 52.40, Ag study indicated tetragonal symmetry, space group I41/acd, a 5 15.264(1), c 5 10.089(2) AÊ , isostructural with cal- 25.90, Cl 8.47, Br 4.88, S 8.41, sum 100.06 wt%, cor- zirtite; strongest lines of a 57 mm Gandol® powder pat- responding to Hg0.98S0.99Ag0.90(Cl0.90Br0.23)S1.13, ideally tern are 3.45(40,411), 2.92(100,332), 2.539(60,600), HgSAg(Cl,Br).